Vibration when accelerating, in shop for second time in 2 weeks

[taf21979]

Originally Posted by bhes1

So I got a customer satisfaction email from GM... Apparently they closed out the ticket on my car on 11/4. It had not been back nor have I received a call from the dealer

I'm done with there surveys. I filled out three surveys for my pick up telling them how displeased I am with it over a period of year and never got a call or email. Why waste your time if nothing will be done. wake up customer service and stop saying "that's normal"

[All.Black.Everything]

Man I have the exact same issue with my 2012 SS. Any where from 65-70 mph the steering wheel starts to vibrate, and it gradually gets a little worse as my speed increases. As soon as I let off the gas the vibration stops, even if I'm above 70mph. I've taken it to 3 different shops and nobody can figure it out. I've been told the motor mounts are fine, the cv axles are fine, the u joint is fine... Driveline looks fine... If you find out anything let me know! This is extremely frustrating.

[qcman]

Originally Posted by All.Black.Everything

Man I have the exact same issue with my 2012 SS. Any where from 65-70 mph the steering wheel starts to vibrate, and it gradually gets a little worse as my speed increases. As soon as I let off the gas the vibration stops, even if I'm above 70mph. I've taken it to 3 different shops and nobody can figure it out. I've been told the motor mounts are fine, the cv axles are fine, the u joint is fine... Driveline looks fine... If you find out anything let me know! This is extremely frustrating.

Mine is very similar around 70-75 mph when I accelerate there is a light vibration in the steering wheel and stops when I let off the peddle. Though mine gets better when going faster than that unlike yours....Admittedly this car has a lot of road feel as in every crook and cranny in the pavement is felt in the steering wheel and I really don't like that much.

I think that road feel tendency amplifies any small vibration that might be present in the car. Mine is going to be largely parked until Spring now so I won't be doing anything about it til it comes out full time. Its almost as if the steering wheel needs more damping from the car itself.

Cam

[All.Black.Everything]

Originally Posted by qcman

Mine is very similar around 70-75 mph when I accelerate there is a light vibration in the steering wheel and stops when I let off the peddle. Though mine gets better when going faster than that unlike yours....Admittedly this car has a lot of road feel as in every crook and cranny in the pavement is felt in the steering wheel and I really don't like that much.

I think that road feel tendency amplifies any small vibration that might be present in the car. Mine is going to be largely parked until Spring now so I won't be doing anything about it til it comes out full time. Its almost as if the steering wheel needs more damping from the car itself.

Cam

Yeah I think you're right, I tested it earlier today and mine too feels like it gets a little better when I go faster like around 80-85. My car is lowered an inch or so, so I know the suspension is a little stiffer and I will feel more vibrations from the road. I'm just a little concerned because Im moving from Florida to Vegas next week and I don't want to be driving on the interstate and the damn thing just fall apart. I'm getting it re balanced today just because it couldn't hurt. But I guess time will tell!

[qcman]

Originally Posted by All.Black.Everything

Yeah I think you're right, I tested it earlier today and mine too feels like it gets a little better when I go faster like around 80-85. My car is lowered an inch or so, so I know the suspension is a little stiffer and I will feel more vibrations from the road. I'm just a little concerned because Im moving from Florida to Vegas next week and I don't want to be driving on the interstate and the damn thing just fall apart. I'm getting it re balanced today just because it couldn't hurt. But I guess time will tell!

Balancing can't hurt but to me if it were a balance issue it wouldn't stop just because you let off the gas. The rear end on mine clunks sometimes when cold so I don't know if that could be related or not. My problem is that its quite subtle so when my dealer drove it he said it felt normal for a SS. Is yours a manual or auto? Mine is an auto BTW. I'm sure your car is likely reliable despite this what I would call an annoyance. Oh forgot I put new rubber all around on mine BFG Geforce Sport Comp II's and it didn't help the issue.

Cam

[bhes1]

It's auto. Still no resolution...wishing I had not bought it.

[All.Black.Everything]

Originally Posted by qcman

Balancing can't hurt but to me if it were a balance issue it wouldn't stop just because you let off the gas. The rear end on mine clunks sometimes when cold so I don't know if that could be related or not. My problem is that its quite subtle so when my dealer drove it he said it felt normal for a SS. Is yours a manual or auto? Mine is an auto BTW. I'm sure your car is likely reliable despite this what I would call an annoyance. Oh forgot I put new rubber all around on mine BFG Geforce Sport Comp II's and it didn't help the issue.

Cam

Yeah mine too is an auto, I had it road force balanced yesterday and the guy said the balancing before had been done all wrong. And that the balancing wasn't all the way through the wheels. Even after the "proper" balancing, the problem still persists... Was looking through some other threads and some one tried switching the left and right front wheels and it worked. So I'm gonna try that today. Also I having the wheels balanced while still on the car might be an option too. Maybe the hub assembly is off? I just want some answers! It seems crazy that for so many people having this issue that there are so few answers.

[qcman]

I think the real issue is that it is related to throttle input which to me means a drivetrain vibration (driveshaft, axle shafts, motor mounts etc.). I'm suspecting it could even be torque converter related.

While that issue has been an issue on V6's& not V8's it doesn't mean it can't occur. I know they test for that by locking off the torque converter though that problem seems to manifest at lower speeds around 45-50 mph so I could be way off. I'm convinced it is not a wheel balance or alignment issue however.

Cam

[lawdog]

Originally Posted by qcman

I think the real issue is that it is related to throttle input which to me means a drivetrain vibration (driveshaft, axle shafts, motor mounts etc.). I'm suspecting it could even be torque converter related.

While that issue has been an issue on V6's& not V8's it doesn't mean it can't occur. I know they test for that by locking off the torque converter though that problem seems to manifest at lower speeds around 45-50 mph so I could be way off. I'm convinced it is not a wheel balance or alignment issue however.

Cam

Torque converter sounds like a good possible candidate too. They are hard to diagnose for kids just reading error codes on machines.

[qcman]

Originally Posted by Rock-It Man

One of the easiest diagnostic steps is isolating driveline vibration from wheel vibration. Is your dealer a complete idiot?

Any chance you care to elaborate on this comment for us less in the know???

[15rs/ss]

anybody know what happened here? i have a slight vibration while accelerating

[mantis]

Originally Posted by bhes1

It's auto. Still no resolution...wishing I had not bought it.

By now I am sure you have resolved this problem in some way.But I have had the same problem with my '10 SS LS3 .I found out my problem was a BOLT.On the Universal Joint Bearing and Flange. My local Chevy dealer had no idea that these bolts are a one time use bolt only.I went under and one of the bolts were sheared off and I just pulled it right out. Tourque is at 85 FTLBS on the "hex bolt"There are 3 hex and 3 torx
I think the Torx are 65 FTLBS

http://www.tonkinonlineparts.com/sho...rimLevel=26613